Electrical operating device.



R.VAN'R.S1LL. ELECTRICAL @PERATING DEVICE. APPLIQAT-ION FILED MAB.. 12,1909. 1,049,415.l` Panenneauan. 7, 1913.

To all 'io/0mift may concern RICHARD "VAN R. SILL, F NEWARK, NEW' JERS ASSIGNMENTS,

CORPORATION' OF NEW YORK.

EY, .ASSIGNOR, :BY 'DR-ECT AND MESNE "EO SECDNDARY CONTROLLER COMPANY, OF NEW YORK, N. Y., A

ELECTRICAL PERATNG- EVCE.

notaire.

Application led March i2, l

. scription of the invention, such as will enable others skilled inthe art to which it apswitch, the cont-roller being pertains to make and use the saine.

ln an application tor patent, No. Stilfli, tiled September 5, 1907, I have shown and described means for controlling the transmission of electric power, having special reterence to the regulation of a controller which p feeds current to a power motor, and the synwith those of a master primarily adapted to electric railways ot the multiplo unit system.

The invention embraced bysaid application consists of a controller operated by a. pilot motor, constant fields and governor fields for the pilot motor, and independentJ connections between the armature ot the pilot motor and the cont-act surfaces of a master switch. These connections are accomplished, in the forni illustrated, by providing the commutator of the pilot motor with conductor segments in staggered archronisni of its steps rangement and connecting each of the seg'- inents with one of the armature coils or sectional windings of the pilot and with one oit the contact terminals of the master switch.

The application referred to also ein-- braces the combination of a pilotmotor, as above described, with a controller, independently of the governor fields by which the rotation of the pilot mol'or is retarded or reversed, the former in the event of the full line voltage being suddenly thrown in at the master switch, and the reversal in the event of an overload upon the power motor, as by a short circuit. rhese governor fields practically render the mechanism incapable of careless operation. 3 By reason `of them the .necessity of solenoids or their equivalents is entirely obviated.

Theadvantage of the described*construction of pilot motor and its connections with the master switch is that the rotation of the r l l l i Specification of Letters Patent.

pilo twhich controller movement of the master atoi' may the inastcr switch the to exactly the saine extent and it' the inas-v 'itch be 'otatioii oit the controller without the use of solcnoids. governor .fields are not necessary ter sv. step i a sa te torni S. Serial No. 482,901.

motor and that of the` element with its armature may` be movable, as a drum, are synchronized with the switch. The operbe certain that as lie notches up pilot motor is moving gradually turned the step-by will follow Hence the except for guard, as above stated. The peculiar of pilot mot-or and its connections t0 a master switch are capable of adaptation to a variety ot purposes apart iroiii 'the regulation ol' a controller'. They are available where effect tation cially ated is at a distancetroni @ne of the advantages ver an electric current may be used t0 a movement consequent upon the roof a motor armature, and are espevaluable where the the master switch. attendiiiggtheir use is that the cnrreiiti's vretained in the motor at all influence alone times and the motor is governed by its so that it' the current be interrupted the armature is free to return to the st arting point.

switch simply shifts the current successively through the sections of the armature the current is not, in normal operationcut out from ing m operation. How oi current should Fie the controller be returned point should fail to shut off ine motor at all.

The use ofgovernagnets avoids the dangers of careless lf when they are employed the interrupted. and to the starting but the operator the master switch, a

under spring tension,

sudden resumption of the current could not canse to its,

the pilot motor tosiiddenly iiy back original position in synchronisin with the master switch as the pilot motor is, owing to the governing inagnet-sincapable of any but a` `gradual step by step movement.

In thepresent instance l' have shown a motor and controlling switch adapted to operati ng' the steering gear Fi o" forni Reit of a ship.

nrc l a diagram of the preferred of einbodinieiit. Fig. 2- is a view ofA Fig. 3 shows a' modified rring to Fig. l, the pilotv motor is element to be operlnected in circuit.

lwith the sections 8 or they may be energized by other sources of supply., The segments 7 are shown adapted to engage brushes 10 keach of which is directly connected to the terminals 12 of a switch 13 by conductors 14. Ihave shownthe switch in the form of a master controller and movable ,by a steering wheel 15. Upon operating the steering wheel to transmit the current the first terminal point 1.2 is cut in and the current passes through its respective conductor 1li and segment 7 into the corre? spending section 8. ,its shown in Fig. 2 the opposite 'sections on Aw'indings 8 are con- On ecoming excited they tend to center toward ti'e fields 9. This causes the first step of the armature of the motor and, in consequence, a part turn of 'the rudder head 5. As the operation of the wheel 15 is continued the armature' is correspondingly rotated, always in synchronism with the movement of' the, switch. is illustrated iii Fig. 2 time of uit Winfiings 8 are under the inuence oeachof the tields 9. Any Ior all of 'these pairs of windings may be excited at the same time.- Their tendency is to center toward the magnets 9 and hence the operator may vby slightly x turning the. wheel 15 cause one or two of the windings to be denergized. The pair of windingsremaining' excited will then tend to center toward, the magnets. This insures a movement of the pilot motor and the rudder in exact synchronism with the' steering wheel and master'switch.

In the form of embodiment shown in Fig. 3 the commutator 1,6 of the motor 17 Ais equipped with rings i8 in lieu of the staggered segments 7. Conductors 19 lead from"l each 'ofuthese rings to one of the contact points 2,0,of"th'eswitch. This form ot' emv'bodiment requires a double switch 21 operated by thev wheel 22. The construction of .the motor and the operation of the rudder are, or may be, similar test-hose of theA corresponding parts shown .-in' Fig. 1. The

operation of a vsteering mechanism embody.-

ing the modified construction is, however, capable of being interfered with by dead centers# For instance, the opposite sections A, B, of the motor might, as shown in Fig. 2, be directly under .the influence ot the mag.- netie fields when the meter is at rest". As-

suming that contact points C, "D, lFig. 3, *are the ones through which sections A, B, are energized, it will be seenA that if the switch blade 21 be quickly turned to contact with points C, D, no rotation ot the motor armaturer will result.; The possibility of :this contingency arising, however, is remote andthe modified construction may be successfully operated :tor steering gears.

p vIn the preferred formo embodiment the diliiculty above referred to cannot arise for `the reason that each section of the motor must be successively energized before a given?,

section can pass from one of the fields .to the other and hence there must alwaysbe arotation of the ,motor armature conse uent" upon, and corresponding with, that o the switch.

l, what r have inn-Saite@ the invntion as i adapted to operating the rudder of a ship, yet it is available in a broad field of application. For instance' it may be lemployed corresponding to gear 4.0i Fig. 1. l' I claim as my invention:-

1. Electrical operating means comprising for gun pointing where an element 1s used' a motor, a movable element adapted to be operated by the armature of said -motor, said armature having sectional windings, s. switch having terminal points, independent electrical connections between each of the terminal points of said switch and one of the sectional windings of said armature, conductor segments on the commutator of said armature, and each of said segments separately connected to one of the sectional windin'es of the armature and to one of the terminal points of said'switch. l

2. Electrical operating means comprising a motor, a movable element adapted to be operated by the armature of said motor, a switch having terminal points in staggered arrangement, conductor segments on the commutator lof said armature incorres ohding relativeJari-angement to said termina points, and each of said segments separately connected to one of the sections of the armature and to one of the terminal points of said switch. f p v f 3. In an electrical steering device, the combination with a rubber head, of a' motor having its armature rovidedwith sectional windings and in operative engagement with said rudder head and its commutator se ments in staggered arrangement, a switc ,l each of said segments being connected to one of the sections of said motor armatureand' ,motor having its armature provided ,withl I sectional windings and inoperative engagement with-"said rudder head, of. a master In testimony whereof, I. have signed this switch,A and independent electrical` connec- 'specification in the presence of two subtions lbetween successive sections of said scribing witnesses.

windings and successive contact surfaces of RICHARD VAN R. SILL. said meisterl switch, whereby the polarity of Witnesses: the armature maybe-progressively shifted i GRAFTON L. MCGILL,

GERTRUDE C. FLYNN.

as the master switch is operated. l 

